The present invention relates to an engine speed adjusting device for automobile performance testing, that is, a cylindrical case (1) which is in communication with both sides, and is inserted into the case (1) and axially supported by a bearing (21), the outer peripheral surface of one side Spiral is formed, and the other end is screwed to the rotation shaft 2 to the handle 22 is fixedly laid, and the outer peripheral surface of one side formed with the spiral of the rotation shaft 2, the outer peripheral surface is the case (1) Is splined to the outer circumferential surface of the), and the end portion is screwed to the piston (3) and the outer circumferential surface of both ends of the case (1), respectively, so that the pressure pad (31) is fastened to be in close contact with the accelerator pedal (10). An anti-slip pad 6 which is attached to the end of the base 5 fixedly installed on both sides of the cap 4 and the outer circumferential surface of the one-side adjustment cap 4 on which the handle 22 is held, is pressed and fixed to the steering wheel 9. ) And the accelerator pedal 10 side adjustment Cap 4 is coupled to the seat plate 8 which is fixed to the end of the leg 7 fixedly installed on both sides of the outer circumferential surface, so that the engine speed is properly adjusted during various performance tests of the stationary vehicle, and maintained at the correct engine speed. It is possible to provide a very useful effect of improving the reliability of the test results by precisely adjusting the test result by greatly reducing the labor force and improving the test efficiency by reducing the test personnel.
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